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  Duckbilled dinosaur

 

Duckbilled dinosaurs, seen in this illustration by University of Toronto released February 2, 2006, dating back about 90 million years, had huge crests with complex nasal passages, and used them to honk sexual and social messages, according to a new study in the journal Paleobiology.  (Reuters)

 

Vocabulary:
 

duckbilled: (嘴巴)象鸭的

crest: (鸡冠)

honk: emit a honk (发出雁叫声)